In this paper we propose a utilization of infinite RRC-pulses (with finite root raised cosine
spectrum) as shapes for subcarriers' spectrums in spectrally efficient frequency division …

This paper proposes novel coded modulation schemes based on LDPC codes and optimal
partial response (or Faster-than-Nyquist) signals. In these schemes coded bits are mapped …

Optimal signals with smoothed envelopes and increased duration are considered.
Smoothed envelopes were obtained by optimization task with restriction on the energy of …

In the paper we compare two approaches of intentional introduction of inter-symbol
interference (ISI) into single-carrier signal to improve its bandwidth efficiency. The first …

This paper proposes new formulation and solution of optimization problems to synthesis
bandwidth-efficient signals. Different types of optimization problems such as maximizing free …

The way to increase spectral efficiency without significant energy losses by using optimal
signals is considered. SDR (software-defined radio) platform is proposed as transceiver …

This paper considers the improvement of DVB-S2 system by using bandwidth-efficient
multicomponent signals (MCS) with optimal shaping pulses. Finite optimal pulses are …

Optimal signals with increased duration, providing overcoming “Nyquist Barrier”, are
considered. Optimization task of searching envelopes of signals is presented and …

In this paper, we investigate the performance of massive MIMO systems in a single cell using
independent and identically distributed (iid) Rayleigh channels. This includes studying the …

One of the branches of Faster than Nyquist (FTN) signaling providing transmission at the
rate higher than" Nyquist limit" with insignificant energy losses includes optimal FTN pulses …